error[E0532]: expected tuple struct or tuple variant, found unit variant `E::A`
  --> $DIR/issue-pr29383.rs:9:14
   |
LL |     A,
   |     - `E::A` defined here
...
LL |         Some(E::A(..)) => {}
   |              ^^^^^^^^ help: use this syntax instead: `E::A`

error[E0532]: expected tuple struct or tuple variant, found unit variant `E::B`
  --> $DIR/issue-pr29383.rs:11:14
   |
LL |     B,
   |     - `E::B` defined here
...
LL |         Some(E::B(..)) => {}
   |              ^^^^^^^^ help: use this syntax instead: `E::B`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0532`.